The Harajuku Barbie, often shortened simply to Barbie or Princess, is the name of one of Nicki Minaj's longest lasting and most famous alter egos. Nicki the Harajuku Barbie accentuates the qualities of an imaginative, fun, coquettish girly girl-fashionista, that loves all things pink. This is also the muse who ignites the transformation of Nicki's performances as an R&B/Pop singer and future Rock Star Icon.
Barbie is famous for speaking softly and acting much more naïvely than any of her other egos. She is like the opposite of Roman. Barbie's favorite color is pink, similar to Minaj, and, after Minaj began wearing wigs of many different colors, she is typically found in blonde or pink wigs. However, Barbie can also act very sexually as she sings in the song BedRock.
It is sometimes difficult to determine which songs are Minaj rapping and which ones are Barbie, besides that sometimes Nicki sings "It's Barbie bitch!", but Minaj confirmed that Barbie is in fact rapping on BedRock and Monster. Fans have also speculated that Barbie is on other Pink Friday songs like "I'm The Best", "Moment 4 Life", "Check It Out", "Your Love", "Super Bass" and "Girls Fall Like Dominoes", because of the soft voice she uses in those tracks but Nicki hasn't confirmed any of the appearances.